B25x20x8mm Neodymium Magnet, 25 x 20 x 8mm Block Magnet

Item No.: B25x20x8mm
Material: NdFeB, Grade N42
Shape: Block
Dimension: 25x20x8mm
Tolerances: ±0.1mm x ±0.1mm x ±0.1mm
Weight: 4.000g
Grade: N42
Coating: Ni-Cu-Ni (Nickel)
Pull Force(lbs): 28.02 lbs (12.74kg)
Surface Field(Gauss): 3583
Magnetization direction: Through Thickness
Max Operating Temp: 80°C
Product Drawing: PDF drawing of B25x20x8mm · JPEG drawing of B25x20x8mm

Other Grade B25x20x8mm Neodymium Magnets (25x20x8mm):

Grade Item No. Product Name Pull Force Inquiry
N35 ALB-B25x20x8mm-N35 B25x20x8mm-N35 Neodymium Magnets 23.55 lbs (10.70kg) Inquiry
N38 ALB-B25x20x8mm-N38 B25x20x8mm-N38 Neodymium Magnets 23.55 lbs (10.70kg) Inquiry
N40 ALB-B25x20x8mm-N40 B25x20x8mm-N40 Neodymium Magnets 25.53 lbs (11.61kg) Inquiry
N42 ALB-B25x20x8mm B25x20x8mm Neodymium Magnets 28.02 lbs (12.74kg) Inquiry
N45 ALB-B25x20x8mm-N45 B25x20x8mm-N45 Neodymium Magnets 29.74 lbs (13.52kg) Inquiry
N48 ALB-B25x20x8mm-N48 B25x20x8mm-N48 Neodymium Magnets 31.52 lbs (14.33kg) Inquiry
N50 ALB-B25x20x8mm-N50 B25x20x8mm-N50 Neodymium Magnets 32.43 lbs (14.74kg) Inquiry
N52 ALB-B25x20x8mm-N52 B25x20x8mm-N52 Neodymium Magnets 33.35 lbs (15.16kg) Inquiry
N42SH ALB-B25x20x8mmSH B25x20x8mmSH Neodymium Magnets 28.02 lbs (12.74kg) Inquiry

High Temperature B25x20x8mm Neodymium Magnets (25x20x8mm) are also available:

Neodymium Material Type Maximum Operating Temp Curie Temp
N (N35-N52) 176°F (80°C) 590°F (310°C)
NM (N35M-N52M) 212°F (100°C) 644°F (340°C)
NH (N33H-N52H) 248°F (120°C) 644°F (340°C)
NSH (N30SH-N50SH) 302°F (150°C) 644°F (340°C)
NUH (N28UH-N48UH) 356°F (180°C) 662°F (350°C)
NEH (N28EH-N48EH) 392°F (200°C) 662°F (350°C)
NAH (N28AH-N35AH) 428°F (220°C) 662°F (350°C)

The Thermal Characteristics listed above are values commonly associated with each magnet's grade or material.  Actual performance in your application may vary with other factors, including the shape of the magnet, the Permeance Coefficient or load line, and how it is used in a circuit.  

B25x20x8mm Neodymium Magnets (25x20x8mm) with other Coating are also available:

Coating Type Overall Thickness Salt Spray Test Pressure Cooker Test
Ni-Cu-Ni (Nickel) 15-21 μm 24 hours 48 hours
NiCu + Black Nickel 15-21 μm 24 hours 48 hours
NiCuNi + Epoxy 20-28 μm 48 hours 72 hours
NiCuNi + Gold 16-23 μm 36 hours 72 hours
NiCuNi + Silver 16-23 μm 24 hours 48 hours
Zinc 7-15 μm 12 hours 24 hours

Each individual layer of Nickel and Copper are 5-7 μm thick. The Gold and Silver Coating layers are 1-2 μm thick. Test results shown to allow comparison between Coating options. Performance in your application under your specific test conditions may vary. Salt Spray testing conducted with a 5% NaCl solution, at 35°C. Pressure Cooker Test (PCT) conducted at 2 atm, 120°C at 100% RH.

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